(Reuters) – Western powers threatened sanctions on Wednesday over the death of 26 people in the worst violence since Ukraine’s independence from the Soviet Union, pressuring President Viktor Yanukovich to compromise with his pro-European opponents. Yanukovich, backed by Russia, denounced the overnight bloodshed in central Kiev as an attempted coup, and his security service said it had launched a nationwide “anti-terrorist operation” after arms and ammunition dumps were looted. In the western bastion of Ukrainian […]